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MB Sturgis 100251-48 High Pressure LP Gas Hose 1/2" ID x 48" -- 1/2" Female Flare x 1/2" Female Flare, UL569 Certified

MB Sturgis 100251-48 high-pressure LP gas hose, 1/2 inch ID x 48 inch length, dual 1/2 inch female flare swivel fittings, UL569 certified thermo rubber construction
MB Sturgis High Pressure LP Gas Hose, 1/2" ID x 48", 1/2" Female Flare x 1/2" Female Flare
 
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Part Number: 100251-48
Manufacturer: MB Sturgis

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MB Sturgis 350 PSI Rated UL569 Certified

MB Sturgis 100251-48 -- High Pressure LP Gas Hose, 1/2" ID x 48", Dual 1/2" Female Flare Swivel Fittings

A rugged, UL569-listed thermo rubber hose assembly built for high-pressure LP and natural gas service. The 48-inch (4 ft) length and swivel fittings on both ends make routing and final connection straightforward -- no pipe wrenches required to align threads. Rated to 350 PSI and flexible even in cold weather, this hose is a reliable choice for RV, commercial, and residential gas appliance connections.

Reliable High-Pressure Gas Line for RV and Appliance Hookups

The MB Sturgis 100251-48 is a general-purpose, high-pressure LP gas hose assembly designed for connections where a rigid pipe run is impractical or where vibration isolation is needed. The 1/2" inner diameter handles typical high-pressure gas flow demands, and the 45-degree female flare swivel fittings on each end seat securely against standard male flare fittings without twisting the hose body during tightening.

This hose is appropriate for connecting LP tanks to regulators, appliances to supply lines, or as a flexible section in a larger gas distribution system. The thermo rubber construction stays pliable in cold climates, reducing the risk of cracking or stiffening that can compromise a seal over time.

350 PSI Max Rating

Handles high-pressure LP service upstream of the regulator and demanding appliance-side connections.

UL569 Certified

Listed for LP and natural gas -- meets the safety standard required by most inspectors and insurance carriers.

Swivel Fittings Both Ends

1/2" 45-deg female flare swivels let you tighten without twisting or kinking the hose body.

Cold-Weather Flexible

Thermo rubber jacket stays pliable at low temperatures, reducing cracking risk in northern climates and winter camping.

Why Swivel Fittings Matter

Standard fixed-end hoses can twist during tightening, stressing the hose body and creating micro-kinks near the fitting. The swivel design on the 100251-48 allows the hex fitting to rotate independently, so you get a proper torque on the flare seat without introducing tension into the hose itself. This extends service life and improves seal reliability.

Common RV and Appliance Applications

  • Flexible connection between LP supply line and high-BTU range or oven
  • Tank-to-regulator pigtail where rigid copper or steel tubing is impractical
  • Appliance drop from an overhead gas manifold in a coach or fifth wheel
  • Vibration-isolating section in motorhome engine compartment gas lines
  • Commercial food truck or concession trailer LP appliance hookup
  • Residential or permanent installation where a listed flexible connector is required

Fitting Compatibility -- Check Before You Order

Both ends of this hose terminate in 1/2" 45-degree female flare (SAE flare) fittings. The mating connections on your appliance or supply line must be 1/2" male flare. This hose does NOT have NPT pipe threads, quick-connect, or POL ends. If your fitting is a different size or thread type, you will need a brass adapter -- the hose itself is not adaptable in the field.

Installation and Maintenance Tips

  • Inspect the hose visually before each camping season -- look for cracks, abrasion, or discoloration near the fittings.
  • Do not use pipe dope or Teflon tape on flare fittings -- the metal-to-metal flare seat is the seal. Thread sealant on a flare connection can actually prevent a proper seat.
  • Support the hose so it does not rest against sharp edges, exhaust components, or moving parts.
  • After installation, perform a leak check with approved gas leak detection solution -- do not use a flame source.
  • Replace any hose that shows stiffness, surface cracking, or damage to the fitting ferrule.

Hose Identification

ManufacturerMB Sturgis
Part Number100251-48
Vendor Part #15-2093
UPC764560528649

Hose Specifications

Inner Diameter (ID)1/2 inch
Overall Length48 inches (4 ft)
Maximum Pressure Rating350 PSI
Hose ConstructionThermo rubber (general-purpose flexible)
Temperature FlexibilityRated for cold-weather flexibility -- resists stiffening and kinking at low temperatures

Fitting Specifications

Fitting Type -- Both Ends1/2" 45-degree female flare, swivel
Fitting Thread StandardSAE 45-degree flare (not NPT)
Swivel DesignYes -- fitting rotates independently of hose body for tightening without twisting

Certifications and Standards

ListingUL569
Approved Gas TypesLP (propane/butane) and natural gas

What Is Included

IncludedOne (1) assembled hose with fittings pre-installed
Not IncludedAdapters, thread fittings, regulators, or appliance connectors

Important Safety Information

  • This is a high-pressure gas hose. Installation must comply with all applicable local, state, and federal codes governing LP and natural gas systems.
  • Maximum working pressure is 350 PSI. Do not use in applications exceeding this rating.
  • Both ends are 1/2" 45-degree female flare (SAE). Verify your mating fittings are the correct size and thread type before installation.
  • Do not use pipe thread sealant or Teflon tape on flare connections -- the flare seat is the only seal required.
  • Always perform a soap-solution leak test after installation. Never test for gas leaks with an open flame.
  • Inspect the hose at least once per season. Discard and replace if the hose shows any cracking, abrasion through the jacket, or fitting damage.
  • Do not route this hose in contact with exhaust components, sharp metal edges, or surfaces subject to significant heat.


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